Multiple opposing jets in a cross-flow at TKK

1
Multiple opposing jets in a cross-flow at TKK

• Inert large-eddy simulation of 'Osbourne' reactor
• First mesh far too small, inlet BC unknown and
  too close to the jets
• Cross-flow probably closer to the jet than fully
  developed flow

.4 m
2 m
.6 m
.6 m

• Also the outlet lengt increased from .45 m to 1 m
• Backflow exists at the outlet

2
Multiple opposing jets in a cross-flow at TKK

• The current mesh includes 4 million control
  volumes
• The flow possesses large range of scale -gt a
  challenging case
• The cross-flow is slow compared to the jet flow
• Crash after one month of computation with 30
  processors !

3
Multiple opposing jets in a cross-flow at TKK

• No fully converged results obtained yet
• The flow appears to become asymmetric